CN104848828A - Power transmission line swing locus measuring system and measuring method based on direct displacement amount - Google Patents
Power transmission line swing locus measuring system and measuring method based on direct displacement amount Download PDFInfo
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- CN104848828A CN104848828A CN201510264227.1A CN201510264227A CN104848828A CN 104848828 A CN104848828 A CN 104848828A CN 201510264227 A CN201510264227 A CN 201510264227A CN 104848828 A CN104848828 A CN 104848828A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
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Abstract
The invention discloses a power transmission line swing locus measuring system and measuring method based on a direct displacement amount. The system comprises a displacement sensing system, a signal conditioning conversion system, a data acquisition conversion system, a data transmission system and a monitoring analysis system. The displacement sensing system comprises two groups of stay rope sensors respectively arranged at the two sides of a power transmission line. The monitoring analysis system is used for processing received signals for converting into stay rope lengths of the stay rope sensors when the power transmission line swings, the swing coordinates of the power transmission line are calculated according to the obtained stay rope lengths of the stay rope sensors and the horizontal distance between first stay rope sensors and second stay rope sensors, and finally, the swing locus of the power transmission line is drawn and display through the multiple groups of swing coordinates of the transmission line, obtained through calculation. According to the invention, high-sensitivity outdoor power transmission line swing locus measurement can be realized through detection of the direct displacement amount, the measuring precision is high, and the continuity and the completeness of swing locus measurement of the power transmission line can also be guaranteed.
Description
Technical field
The present invention relates to transmission line faultlocating field, particularly relate to a kind of transmission line galloping trajectory measurement system based on direct displacement and measuring method.
Background technology
Transmission line galloping refers under the effect of the non-equilibrium stress in the external world, and transmission line of electricity produces low frequency, significantly oscillation phenomenon.When the transmission line of electricity of outdoor is waved, often can cause the accidents such as the gold utensil on transmission tower is damaged, the alternate flashover of transmission line of electricity, time serious, transmission line of electricity waves Accident of Large-scales such as can causing that transmission tower collapses.Therefore, transmission line galloping is monitored there is important practical value and economic implications.
At present, the monitoring of transmission line galloping mainly utilizes acceleration sensor system and camera to coordinate digital image processing system.Acceleration sensor system is that degree of will speed up sensor is attached to transmission line of electricity surface, when transmission line of electricity is waved, acceleration transducer degree of will speed up information sends to computer system by Ethernet, computing machine to acceleration information carry out integration obtain transmission line of electricity wave information, the interference of this method by initial value in the process of integration is larger, and acceleration transducer is subject to the interference of transmission line of electricity, accuracy is poor.Camera is be arranged on electric power line pole tower by camera with coordinating of digital image processing system, the transmission line galloping photo taken is sent to computing machine by wireless transmitting system and utilizes digital image processing system to process, thus obtain transmission line of electricity wave track.This method can only realize qualitative monitoring and accuracy is lower.
In order to accurately grasp line oscillation trace information, need a kind of line oscillation trajectory measurement system adopting direct displacement means badly.
Summary of the invention
The object of this invention is to provide a kind of transmission line galloping trajectory measurement system based on direct displacement and measuring method, can be measured by direct displacement and realize highly sensitive outdoor transmission line galloping trajectory measurement, there is the advantage that measuring accuracy is high, continuity and the integrality of transmission line galloping trajectory measurement can also be ensured simultaneously.
The present invention adopts following technical proposals:
Based on a transmission line galloping trajectory measurement system for direct displacement, it is characterized in that: comprise displacement sensing system, signal condition converting system, Data collecting conversion system, data transmission system unify monitoring analysis system;
Described displacement sensing system comprises the two groups of rope sensor being separately positioned on transmission line of electricity both sides, is respectively the first rope sensor and the second rope sensor, and the stay cord of two groups of rope sensor is fixed on the same position of transmission line of electricity; The signal output part connection signal conditioning converting system respectively of two groups of rope sensor;
The current signal that described signal condition converting system is used for two groups of rope sensor to export becomes voltage signal, the signal input part of the signal output part connection data Collect conversion system of signal condition converting system through conditioning and conversion;
Described Data collecting conversion system is used for amplifying the voltage signal received, and the simulating signal of input is converted to digital signal exports, the signal input part of the signal output part connection data transmission system of Data collecting conversion system;
The signal that described data transmission system is used for Data collecting conversion system exports is sent to monitoring analysis system;
Described monitoring analysis system is used for processing to the received signal, be converted to the pulling rope length of rope sensor when there is transmission line galloping, and wave coordinate according to the pulling rope length of rope sensor that obtains and the horizontal range computing electric power line between the first rope sensor and the second rope sensor, eventually through the many groups transmission line of electricity calculated wave that coordinate draws display transmission line of electricity wave track.
Two groups of described rope sensor are arranged in the same plane perpendicular to transmission line of electricity.
The stay cord of two groups of described rope sensor and two groups of rope sensor are positioned at the same plane perpendicular to transmission line of electricity.
Also comprise insulation blocking system; insulation blocking system is used for realizing electrical isolation; the signal output part of the signal input part connection signal conditioning converting system of insulation blocking system, the signal input part of the signal output part connection data Collect conversion system of insulation blocking system.
Described monitoring analysis system is according to the pulling rope length of the first rope sensor during generation transmission line galloping, the pulling rope length of the second rope sensor and the distance between the first rope sensor and the second rope sensor, Helen's theorem is utilized to try to achieve by the stay cord of the first rope sensor, the stay cord of the second rope sensor and the leg-of-mutton area that between the first rope sensor and the second rope sensor, line forms, that then tries to achieve the transmission line of electricity in this moment waves coordinate, wherein the initial point of rectangular coordinate system is positioned at the mid point of the first rope sensor and the second rope sensor horizontal level, monitoring analysis system waves coordinate by what calculate the transmission line of electricity of different time points, the transmission line of electricity of final many groups different time points according to obtaining wave that coordinate draws display transmission line of electricity wave track.
Described rope sensor is arranged on anchor post, and the stay cord of rope sensor adopts insulation stay cord.
Utilize a measuring method for the transmission line galloping trajectory measurement system based on direct displacement described in claim 1, comprise the following steps successively:
A: utilize the two groups of rope sensor Real-time Collection transmission line galloping signals being separately positioned on transmission line of electricity both sides;
B: after monitoring analysis system receives beginning measuring-signal, timer starts timing, the transmission line galloping signal of Data collecting conversion system acquisition two groups of rope sensor transmissions simultaneously, and the signal collected is sent to monitoring analysis system;
C: the transmission line galloping signal received is converted into the pulling rope length of this moment first rope sensor and the pulling rope length of the second rope sensor by monitoring analysis system, and according to the distance between the first rope sensor and the second rope sensor, Helen's theorem is utilized to try to achieve by the stay cord of the first rope sensor, the stay cord of the second rope sensor and the leg-of-mutton area that between the first rope sensor and the second rope sensor, line forms, that then tries to achieve the transmission line of electricity in this moment waves coordinate, wherein the initial point of rectangular coordinate system is positioned at the mid point of the first rope sensor and the second rope sensor horizontal level,
D: monitoring analysis system utilizes the clocking capability of timer to judge whether to arrive setting-up time, if do not arrive setting-up time, what return the transmission line of electricity of step C continuation calculating subsequent time waves coordinate; If arrive setting-up time, enter step e;
E: the wave coordinate of monitoring analysis system to the transmission line of electricity in each moment in calculated setting-up time carries out matching, and that draws out the transmission line of electricity in setting-up time waves trace image, and stores;
F: timer and the intrasystem buffered data of Data collecting conversion are carried out clearing initialization by monitoring analysis system, waits for and ordering next time.
Two groups of described rope sensor are arranged in the same plane perpendicular to transmission line of electricity.
The stay cord of two groups of described rope sensor and two groups of rope sensor are positioned at the same plane perpendicular to transmission line of electricity.
The present invention is relative to existing acceleration transducer detection method and add camera cooperation digital image processing system detection method, and tool has the following advantages:
1. what traditional acceleration sensor system analyzed transmission line of electricity according to the acceleration information that acceleration transducer obtains waves track, need to carry out integration to acceleration, and the indefinite meeting due to original state in the process of integration causes comparatively big error.And the present invention analyzes according to direct displacement, utilize rope sensor to wave track analysis to transmission line of electricity, directly obtain displacement information, avoid complicated integral operation, thus reduce measuring error, make the result measured more accurate.
2. traditional camera that utilizes coordinates digital image processing system can only carry out qualitative analysis to waving of transmission line of electricity, namely can only judge whether transmission line of electricity is waved, and acceleration sensor system can produce larger output error when transmission line of electricity twists.And the present invention utilizes rope sensor to analyze transmission line galloping track, transmission line galloping can be effectively avoided to reverse and the error effect that brings.Meanwhile, be attached to transmission line of electricity surface compared to acceleration transducer, the rope sensor that the present invention adopts has certain distance apart from transmission line of electricity, can avoid the electromagnetic interference (EMI) that transmission line of electricity produces in transmission of electricity process preferably.
3. the present invention effectively can carry out the trajectory measurement of waving of transmission line of electricity under the adverse weather conditions such as sleet, also can not be affected, thus ensure that continuity and the integrality of transmission line galloping trajectory measurement when working at night.
Accompanying drawing explanation
Fig. 1 is the theory diagram of transmission line galloping trajectory measurement system of the present invention;
Fig. 2 is that transmission line galloping trajectory measurement system medium pulling rope sensor of the present invention is installed and measuring principle figure;
Fig. 3 is the process flow diagram of the measuring method based on transmission line galloping trajectory measurement system of the present invention.
Embodiment
Below in conjunction with drawings and Examples, the present invention is done with detailed description:
As shown in Figure 1 to Figure 3, the transmission line galloping trajectory measurement system based on direct displacement of the present invention, comprises displacement sensing system, signal condition converting system, Data collecting conversion system, data transmission system unifies monitoring analysis system;
Wherein, displacement sensing system comprises the two groups of rope sensor being separately positioned on transmission line of electricity 5 both sides, and the stay cord 3 being respectively the first rope sensor 1 and the second rope sensor 2, two groups of rope sensor is fixed on the same position of transmission line of electricity 5; The signal output part connection signal conditioning converting system respectively of two groups of rope sensor; Two groups of rope sensor all adopt current mode rope sensor, and the stay cord 3 of rope sensor adopts insulation stay cord.Rope sensor to be arranged on anchor post 4, the minimum point when height of anchor post is waved lower than transmission line of electricity 5.In order to ensure to measure the accuracy that transmission line of electricity 5 waves coordinate, in the present invention, two groups of rope sensor are arranged in the same plane perpendicular to transmission line of electricity 5, and the stay cord 3 of two groups of rope sensor and two groups of rope sensor are also positioned at the same plane perpendicular to transmission line of electricity 5.When transmission line of electricity 5, under the effect of the non-equilibrium stress in the external world, brandishing occurs, transmission line of electricity 5 is waved and is moved together with transmission line of electricity 5 by the stay cord 3 driven in rope sensor; When the length of stay cord 3 changes, the signal output part of the first rope sensor 1 and the second rope sensor 2 by output current signal, the size of current signal and the length of stay cord 3 in direct ratio.
In the present embodiment, the displacement measurement scope of rope sensor is 0-500cm, and two rope sensor are arranged on highly on the anchor post of 600cm 4 respectively, lower than line oscillation minimum point.Two anchor posts lay respectively at transmission line of electricity 5 both sides, and two anchor posts and line level distance are 20cm.
The current signal that signal condition converting system is used for two groups of rope sensor to export becomes voltage signal, the signal input part of the signal output part connection data Collect conversion system of signal condition converting system through conditioning and conversion; The 4-20mA current signal that first rope sensor 1 and the second rope sensor 2 export can carry out nursing one's health and change by signal condition converting system, is transformed to 1-5V voltage signal.In the present embodiment, signal condition converting system can adopt signal condition converter.
Data collecting conversion system is used for amplifying the voltage signal received, and the simulating signal of input is converted to digital signal exports, the signal input part of the signal output part connection data transmission system of Data collecting conversion system; In the present embodiment, Data collecting conversion system adopts the data collecting card of 16, can carry out amplifications and process, and voltage analog signal is converted to digital signal is sent to data transmission system the voltage signal of input.
In order to improve signal quality further; in the present invention; also between signal condition converting system and Data collecting conversion system, set up insulation blocking system; insulation blocking system is used for realizing electrical isolation; the signal output part of the signal input part connection signal conditioning converting system of insulation blocking system, the signal input part of the signal output part connection data Collect conversion system of insulation blocking system.
The signal that data transmission system is used for Data collecting conversion system exports is sent to monitoring analysis system; In the present embodiment, data transmission system can adopt optical fiber network system.
Monitoring analysis system is used for processing to the received signal, is converted to the stay cord 3 length l that the first rope sensor 1 when transmission line of electricity 5 is waved occurs respectively
awith the stay cord 3 length l of the second rope sensor 2
b, and according to the distance l between the first rope sensor 1 and the second rope sensor 2
ccomputing electric power line 5 wave coordinate, eventually through the many groups transmission line of electricity 5 calculated wave coordinate draw display transmission line of electricity 5 wave track.
Monitoring analysis system is according to the pulling rope length l that the first rope sensor 1 when transmission line of electricity 5 is waved occurs
a, the second rope sensor 2 pulling rope length l
band the first distance l between rope sensor 1 and the second rope sensor 2
cbecause above-mentioned three lines form triangle jointly, utilize Helen's theorem can draw this leg-of-mutton area S, that then tries to achieve the transmission line of electricity 5 in this moment waves coordinate, and wherein the initial point of rectangular coordinate system is positioned at the mid point of the first rope sensor 1 and the second rope sensor 2 horizontal level; Monitoring analysis system waves coordinate by what calculate the transmission line of electricity 5 of different time points, the transmission line of electricity 5 of final many groups different time points according to obtaining wave that coordinate draws display transmission line of electricity 5 wave track.
In the present embodiment, for the angle of the stay cord 3 with surface level that calculate the first rope sensor 1, the stay cord 3 length l of known first rope sensor 1
a, the second rope sensor 2 stay cord 3 length l
band the first distance l between rope sensor 1 and the second rope sensor 2
c, because above-mentioned three lines form triangle jointly, this leg-of-mutton area S can be drawn according to Helen's theorem:
What then can obtain the transmission line of electricity 5 in this moment waves coordinate (X, Y);
Wherein, the initial point of rectangular coordinate system is positioned at the mid point of the first rope sensor 1 and the second rope sensor 2 horizontal level.
The measuring method of the transmission line galloping trajectory measurement system based on direct displacement of the present invention, is characterized in that, comprise the following steps successively:
A: utilize the two groups of rope sensor Real-time Collection transmission lines of electricity 5 being separately positioned on transmission line of electricity 5 both sides to wave signal;
B: after monitoring analysis system receives beginning measuring-signal, timer starts timing, the transmission line of electricity 5 that Data collecting conversion system acquisition two groups of rope sensor send simultaneously waves signal, and the signal collected is sent to monitoring analysis system;
C: the transmission line of electricity 5 received is waved signal and is converted into the pulling rope length of this moment first rope sensor 1 and the pulling rope length of the second rope sensor 2 by monitoring analysis system, and wave coordinate according to the distance computing electric power line 5 between the first rope sensor 1 and the second rope sensor 2;
D: monitoring analysis system utilizes the clocking capability of timer to judge whether to arrive setting-up time, if do not arrive setting-up time, what return the transmission line of electricity 5 of step C continuation calculating subsequent time waves coordinate; If arrive setting-up time, enter step e;
E: the wave coordinate of monitoring analysis system to the transmission line of electricity 5 in each moment in calculated setting-up time carries out matching, and that draws out the transmission line of electricity 5 in setting-up time waves trace image, and stores;
F: timer and the intrasystem buffered data of Data collecting conversion are carried out clearing initialization by monitoring analysis system, waits for and ordering next time.
Wherein, two groups of rope sensor are arranged in the same plane perpendicular to transmission line of electricity 5, and the stay cord 3 of two groups of rope sensor and two groups of rope sensor are also positioned at the same plane perpendicular to transmission line of electricity 5.
Claims (9)
1. based on a transmission line galloping trajectory measurement system for direct displacement, it is characterized in that: comprise displacement sensing system, signal condition converting system, Data collecting conversion system, data transmission system unify monitoring analysis system;
Described displacement sensing system comprises the two groups of rope sensor being separately positioned on transmission line of electricity both sides, is respectively the first rope sensor and the second rope sensor, and the stay cord of two groups of rope sensor is fixed on the same position of transmission line of electricity; The signal output part connection signal conditioning converting system respectively of two groups of rope sensor;
The current signal that described signal condition converting system is used for two groups of rope sensor to export becomes voltage signal, the signal input part of the signal output part connection data Collect conversion system of signal condition converting system through conditioning and conversion;
Described Data collecting conversion system is used for amplifying the voltage signal received, and the simulating signal of input is converted to digital signal exports, the signal input part of the signal output part connection data transmission system of Data collecting conversion system;
The signal that described data transmission system is used for Data collecting conversion system exports is sent to monitoring analysis system;
Described monitoring analysis system is used for processing to the received signal, be converted to the pulling rope length of rope sensor when there is transmission line galloping, and wave coordinate according to the pulling rope length of rope sensor that obtains and the horizontal range computing electric power line between the first rope sensor and the second rope sensor, eventually through the many groups transmission line of electricity calculated wave that coordinate draws display transmission line of electricity wave track.
2. the transmission line galloping trajectory measurement system based on direct displacement according to claim 1, is characterized in that: two groups of described rope sensor are arranged in the same plane perpendicular to transmission line of electricity.
3. the transmission line galloping trajectory measurement system based on direct displacement according to claim 1 and 2, is characterized in that: the stay cord of two groups of described rope sensor and two groups of rope sensor are positioned at the same plane perpendicular to transmission line of electricity.
4. the transmission line galloping trajectory measurement system based on direct displacement according to claim 3; it is characterized in that: also comprise insulation blocking system; insulation blocking system is used for realizing electrical isolation; the signal output part of the signal input part connection signal conditioning converting system of insulation blocking system, the signal input part of the signal output part connection data Collect conversion system of insulation blocking system.
5. the transmission line galloping trajectory measurement system based on direct displacement according to claim 4, it is characterized in that: described monitoring analysis system is according to the pulling rope length of the first rope sensor during generation transmission line galloping, the pulling rope length of the second rope sensor and the distance between the first rope sensor and the second rope sensor, Helen's theorem is utilized to try to achieve by the stay cord of the first rope sensor, the stay cord of the second rope sensor and the leg-of-mutton area that between the first rope sensor and the second rope sensor, line forms, that then tries to achieve the transmission line of electricity in this moment waves coordinate, wherein the initial point of rectangular coordinate system is positioned at the mid point of the first rope sensor and the second rope sensor horizontal level, monitoring analysis system waves coordinate by what calculate the transmission line of electricity of different time points, the transmission line of electricity of final many groups different time points according to obtaining wave that coordinate draws display transmission line of electricity wave track.
6. the transmission line galloping trajectory measurement system based on direct displacement according to claim 5, is characterized in that: described rope sensor is arranged on anchor post, and the stay cord of rope sensor adopts insulation stay cord.
7. utilize a measuring method for the transmission line galloping trajectory measurement system based on direct displacement described in claim 1, it is characterized in that, comprise the following steps successively:
A: utilize the two groups of rope sensor Real-time Collection transmission line galloping signals being separately positioned on transmission line of electricity both sides;
B: after monitoring analysis system receives beginning measuring-signal, timer starts timing, the transmission line galloping signal of Data collecting conversion system acquisition two groups of rope sensor transmissions simultaneously, and the signal collected is sent to monitoring analysis system;
C: the transmission line galloping signal received is converted into the pulling rope length of this moment first rope sensor and the pulling rope length of the second rope sensor by monitoring analysis system, and according to the distance between the first rope sensor and the second rope sensor, Helen's theorem is utilized to try to achieve by the stay cord of the first rope sensor, the stay cord of the second rope sensor and the leg-of-mutton area that between the first rope sensor and the second rope sensor, line forms, that then tries to achieve the transmission line of electricity in this moment waves coordinate, wherein the initial point of rectangular coordinate system is positioned at the mid point of the first rope sensor and the second rope sensor horizontal level,
D: monitoring analysis system utilizes the clocking capability of timer to judge whether to arrive setting-up time, if do not arrive setting-up time, what return the transmission line of electricity of step C continuation calculating subsequent time waves coordinate; If arrive setting-up time, enter step e;
E: the wave coordinate of monitoring analysis system to the transmission line of electricity in each moment in calculated setting-up time carries out matching, and that draws out the transmission line of electricity in setting-up time waves trace image, and stores;
F: timer and the intrasystem buffered data of Data collecting conversion are carried out clearing initialization by monitoring analysis system, waits for and ordering next time.
8. the measuring method of the transmission line galloping trajectory measurement system based on direct displacement according to claim 7, is characterized in that: two groups of described rope sensor are arranged in the same plane perpendicular to transmission line of electricity.
9. the measuring method of the transmission line galloping trajectory measurement system based on direct displacement according to claim 8, is characterized in that: the stay cord of two groups of described rope sensor and two groups of rope sensor are positioned at the same plane perpendicular to transmission line of electricity.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106556388A (en) * | 2015-09-25 | 2017-04-05 | 广州汽车集团股份有限公司 | The measurement apparatus of movement locus of object, measuring method and caliberating device |
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| CN107421625A (en) * | 2017-06-30 | 2017-12-01 | 中光华研电子科技有限公司 | A kind of distributed optical fiber sensing system suitable for power transmission line swaying monitoring |
| CN109297451A (en) * | 2018-09-20 | 2019-02-01 | 广东省长大公路工程有限公司 | A kind of strand gap measuring device and system based on Internet of Things |
| CN113418669A (en) * | 2021-06-23 | 2021-09-21 | 湖南科技大学 | Method for determining parameters of non-contact electromagnetic excitation system of power transmission line |
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